EntityException in MVC4 - asp.net-mvc

Question

I am new to MVC and i am having a problem. I have one table named tblEmployee , model Employee. Controller EmployeeController. i am having EntityException in my EmployeeController controller.
My code for Model:
namespace MvcPractice.Models
{
[Table("tblEmployee")]
public class Employee
{
public int EmployeeId { get; set; }
public string Name { get; set; }
public string Gender { get; set; }
public string City { get; set; }
}
}
i have created EmployeeContext.cs in Model:
using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Web;
namespace MvcPractice.Models
{
public class EmployeeContext : DbContext
{
public DbSet<Employee> Employees { get; set; }
}
}
Connection string:
<connectionStrings>
<add name="EmployeeContext"
connectionString="server=.;database=MvcDemo; integrated security=SSPI;"
providerName="System.Data.SqlClient"/>
</connectionStrings>

Answer 1

This is a web application but you are using integrated security to connect. That will use the identity of your web application. It's preferable to use a real SQL Server user created for your application. So create a user and change your connection string to something like this:
server=.;database=MvcDemo;User ID=<username>;Password=<password>;
Additionally, it's unusual for a local installation of SQL Server to be installed with an empty instance name, so you may also need to check that the server name shouldn't be this, just check what your SQL Server Management Studio is using to connect:
.\sqlexpress